As an update, I managed to get an alternate compiler to work with MATLAB v 2015aSP1. I can not test it with Windows 10, but I don't see why it wouldn't work. It operates by overwriting the mexopts.bat file to force matlab to look at another location for the compiler. Note,it did not show up when I did "mex -setup".
Anyway, the package is gnumex. I installed it and compiled the T-MATS functions then tested it with a couple of blocks with no issues. There were a few warnings, but no real catches.
-Jeff