Get a kick out of PNHers riding bridleless?? Honza Blaha & Gaston are quite impressive. Also check out Guy McLean & (far & away) more impressively, JF Pignon, Mario Luraschi, Lorenzo 'The Flying Frenchman'... *Not sure of how Mario & Lorenzo train this tho.
I personally seem to do it(& many things
) a bit back to front to many, in that I will start, or 'retrain' a horse without headgear & work up to using a halter & then bridle when I feel we're up to it. Corporal, I so get where you're coming from re lack of time, & if you're talking taking a bridle-trained horse on a ride v's spending time to train them bridleless, that's one thing, but if they're trained well to seat & leg from the beginning, there's no extra time once you're up to riding out.
**So saying, when I ride out, while I do use 99% seat & legs & my reins are loose, I do like the 'safety chain' of reins & halter & a well trained 'one rein stop'.... not to mention something to tie a horse up with if I want to stop at a shop or such!