I haven't ever owned a right feed gun myself. Only my most recent gun, my Cocker, is vert feed...the others were powerfeed. I liked powerfeed particularly well with my Shocker because I also used air assist with it, which made for awesome feeding from any angle. The only thing I didn't like about it was that it made my gun too tall unless I angled it and sat it lower on my shoulder. I could do it and do it well, but if I wasn't paying attention it would add 6 inches to the overall hight of my gun. It was because of the size of it and the weight that made me want to be a back player, but because of the balance it afforded I stayed a back player and found I could be successful at it, and I learned it so that's where I stayed. It did teach me to lean all at once to keep my whole sight picture and body aligned correctly so I could aim steadily and switch targets easily.
With vertical feed and a low rise like on my Cocker, my hopper sits a lot lower. I'm not as impaired at switching hands and side of the bunker quickly and I tend to lean a little less farther down, only at the waist rather than with my hips as well, but that again depends on the bunker in question, where the angles are, and how many other people there are to shoot at at the time. I can't tilt as much unless I use a Warp feed because then the balls will roll back out the low rise and since I'm not using a Shocker or an Angel I don't have air assist, gated feed (Mega props to John Rice on that idea...even though a lot of people don't see the idea initially, I listened to his interview and must say that is brilliant.) or suction timing to get them back in. Oh well, like anything, tradeoffs are there.
