Surley? 25 marketing people in Minnesota, I don't think I would be worried about taking their advice.

I use Pletscher two legged kickstands on a MTB commuter and my touring frames, perfect. One thing I do, which may sound odd, is wrap the chainstays with old tubes at the contact point, and I use a beefy black zip tie to pull the bolt assembly towards the bottom bracket and lock it into place. They have a tendency to loosen over time, torque around, and I've found locking them in and having rubber at the contact point allows them to flex slightly but stay in place. I suspect the damage that is done to the frame is a result of people over torquing them attempting to get them to stay put.

Otherwise, they are heavy...not something I would consider for a fast ride. I can't imagine not using one for a dedicated touring bike.