I liked a good deal of his Trek work, and I have an easier time compensating for some of it since I kind of picture what the characters are doing when I read it. The only thing I didnt like about his work was on his own universe... the captain was just... too much. I'd say the TF thing was worse (then again I picked out only the ending, perhaps it would have sucked me in if I read the whole thing and got used to the style).
I dunno man, his expository writing what goes into how Mackenzie Calhoun and his crew can bed any male or female got pretty bad. Everything he wrote ended up reading like explicitly written fanfic pairings. Badly so.
One of his Q novels got fucked up for that very reason. And another one centered around the duplicate Riker...I can keep going on.