I've used TMax 100 and 400 quite a bit, and I think that you'll probably be all right. If your prints are light, and it's because your negatives are dense, then you'll probably still have useful images. The highlights will probably be pretty dense (lots of silver built up), but I think there'll likely be usable detail if you expose prints long enough to print through them. I can't say for sure, since I've always developed at room temperature, but I'm guessing it'll be good.
Let us know when you get some prints from them. I, for one, am interested to know how they turn out.
If Charlie browses through here, he can probably add something, since he has used quite a bit of "hot" developer, both chemically and physically.