I have bought NNN.ch, LLL.ch and NNNN.ch, even NNNNN.ch, in the last month.
I tried to buy premium Chips with 8's, double or triple numbers, and for LLL tried to get some Chinese city codes. No 0 or 4, no a e i o u v. Short domains like this are what's driving the market in 2015 and at present, with .com getting highest prices, but other extensions have moved up in price too.
Chinese buyers want .com, .net, .org, .cn, .cc and have taken out short domains in .biz, .info, .co, .xyz, .top, .wang, .click and .link, maybe other extensions too. It is shown they will go to other extensions without reason that I can see other than they want short, quality number and letter combinations. The budgets and demand seem to be huge for domains. Just because I don't understand it doesn't mean it isn't real or isn't happening, doesn't mean it's a bubble or will all go away. No one knows what will happen. I think China is big enough, has a huge population, and lots of capital to throw at domains. More people from China and other countries are coming and will come into domain investing as awareness increases and internet grows. Europe and North America have been built up for internet longer than many other places in the world that are still expanding. There are only so many short quality domains to go around, and not everyone has the budget for an LLL.com or NNN.com
It is possible that Chinese buyers may get interested in .CH and other extensions that anyone are allowed to own (no restrictions). .CH is available at many common registrars (Godaddy, Namecheap, ...), has low reg fee, and also is a country code for a European country which may also be a source of sales. If you show anyone the letters CH and ask them to say which country is this, I bet many would associate CH with China, maybe Chile too... There are many examples of the domain extension being used for something other than it's original meaning, .CO, .ME, .NU, .IT, .LY. So why not .CH for China, or China H------. I saw a .CC used for a Chinese site where they used .CC to stand for China Companies. New gtlds are starting to get people to think that what is right of the dot has meaning just as much as what's left of the dot, slowly but surely over time.
A lot of speculative buying was done in December in .CH, you have to wait 60 days to be able to transfer, so in February/March you may start to see more active promotion of .CH in the aftermarket. Those of us who bought have a year to see what happens. Maybe nothing, maybe it will be good. It is speculation, but many of us see the possibility.
Look at LLLL.com and NNNNN.com over a year ago. From reg fee value to thousands.
The .cc used to be considered a joke extension, you could have regged all the LLL and NNN you wanted, and NN and LL would have been cheap in the aftermarket.
Look at LLL.xyz and NNN.xyz, who wish they didn't buy them during landrush now? At the time it would have seemed stupid.
LLL.co and NNNN.co could still be hand regged 6 months ago, now they are 10x to 30x or more the price.
So what if there are no examples of .CH sales to China now. If/when you do start seeing the sales happen, it will be too late to hand reg them and get them for reg fee. That is the whole point of buying them now, before the interest happens. Seeing what might happen in 2016 and acting on it now.
Like .CH, I've also done the same for .CZ, and a bit in .IO, .BZ and even a couple premium NNN.SH (Shanghai)!! If it doesn't work out it won't break me, having got in at ground floor.
After 2015 I don't understand how people can sit on the sidelines and not try to experiment or speculate a little in short domains, and then criticize others that do...