SA keycaps aren't comfortable.
Your experience will be acceptable only if your press them with absolute precision in the center. You'll need to press that exact point, or else you'll suffer.
Cylindrical profiles don't have that problem, you're free to hit them with less precision.
This is only true for certain switch types in my experience. I have 5 boards now with SA caps, and have tried them on about 10 switch types. To avoid the binding feeling of off center presses you actually want switches with some play I discovered.
For example, on BOX blacks it's pretty noticeable but I don't notice any on zealios or gateron switches. So they actually feel better on 'wobblier' switches to me (I do have them on BOX Navys and I love the feel and sound, and the switches are so stiff anyway I don't notice any difference if pressed off center - different story for box blacks or browns). The whole wobble thing seems overstated to me in general though, as even when I try to move them around from side to side they seem about the same as cherry profile caps anyway. In addition, the general opinion has been that SA caps should go on med-stiff linear switches, but after trying them on everything I prefer them on medium tactile switches or even (gasp) silent reds.
The OP should try them and see what he prefers, or maybe they won't be for him at all. Of course it is an investment with a little risk, but /r/mm.