I ordered one of the Altrider parts for the wife's GS after doing a bunch of research. The F650GS twin has a crappy side stand to begin with, forcing the rider to tilt the bike past centerline at times to get the stand down. I didn't want a foot that would aggravate that issue, thus the Altrider part. I did have to slightly notch the oem foot for one bolt, but it's solid, no more difficult to put down than w/o the foot and does the job. And the bolts screw into the plate from the top, so no worries about wearing them down or being unable to remove it down the road if you needed to for some unknown reason.
Nice solid piece of kit. I'll be ordering one for the ST, most likely. About the same cost as the Wunderlich.
edit: FWIW, the Altrider piece also has a nice flipped up edge with teeth to catch your boot on to kick the stand down if you're not liking the pin.