That is certainly the best way to use LR sharpening, I agree. My workflow finishes in PS, so I prefer Smart Sharpen these days, and only use LR for a base "capture sharpen" if I use it at all. The problem with the worminess (when it happens) doesn't arise from LR sharpening though, it's the same with any other sharpening tool as far as I can see. It's to do with how LR demosiacs RAF files, and only arises with very detailed textures. So not relevant to portraits, skies or water, for example. What causes it, I have no idea, but X-Transformer seems to avoid the problem rather better.