I have seen many new TLD extensions collecting dust on Sedo. The way Sedo seemingly orders their site is .com, .org, .net first, then random ccTLDs, then slightly related .com, .org, .net, and then finally the new TLDs.
So if you listed this domain, the order someone searching for "Mr" would see your domain is something like this:
Mr.com
Mr.org
Mr.net
Mr.co.uk
Mr.se
Mr.ca
MrMagic.com
MrClean.com
MrFresh.com
MrCool.com
CoolMr.com
CoolMrMr.com
Mr.Money
As you can see, your domain will be fairly far down the list. Even random two and three word .coms will go above you. The same issue may arise in showcase listings.
That is why I prefer DAN and Afternic for new TLDs, although you should certainly still list on Sedo as Daniel Owens suggests.