I think you should let people at it. You'll get maximum exposure that way, and with it in many maps, anyone scouting for modelers would see it and track down the creator of the model.
Source games seem to have a pretty sluggish modding community, and I'm not sure why. In Q3, models were flung around like they were going out of style so people could get their work public domain and into lots of people's maps.
Think of it this way: if the map is bad, I'm pretty sure anyone looking for talent would notice that the map creator probably didn't make that model, and research it if they're interested.