Well I've never rolled an edge or even nicked the strop. It's taken me months to be able to shave without razor burn, and to be able to hone at even a moderate level of competence. But I learned stropping without a hitch; I think I read one description and haven't given it a thought since. In fact I rarely even visited the stops forum, which is why horizontal stropping never even occurred to me.

I guess what I'm wondering is about no-pressure stropping. That seems like one thing that might be affected by stropping at an angle. I would never describe my way of stropping as "just the weight of the razor"; I'd describe it as gently keeping the spine and edge in constant contact. I know I'm not doing anything disastrous; I'm just wondering if I did that "just the weight of the razor" thing on a horizontal strop if that would mean superkeen edges.