Nope but the hunt wasn't a total waste. Was able to FINALLY upgrade my Lagiacrus helmet to upper rank levels. Just in time too because he nailed me 4 of 5 straight times pretty quickly(I ended up in the same area with him) at the start of our last hunt together. Didn't get a health boost but the defense kept me from fainting long enough for everyone to arrive.
I did a quick search for info on how to get them & some sources claim you can only score them after you break off everything(horns, tail, claws, chest, & back spikes) AND captured him. Another source claims they only appear in 3% of quest rewards.