I have never used a spotter while hunting before, but this year in Idaho I was in desperate need of more power while doing some long range glassing.
I do not like the idea of packing a full size scope around with me, purely for space and weight savings. I also, (at this point anyway) am not worried about scrutinizing every aspect of a buck/bull, but am more worried about making sure that he's a decent buck, or simply just finding horns at long distances.
I am also playing the with the idea of getting a pair of 15x binos for tripod glassing, because they are so much easier on my eyes than a spotter. The price of this scope is pretty hard to beat though and I feel that I could get that price for it again should I decide it's not the way I want to go.