I'm uncertain whether this sub-forum is the proper location for my query. Moderator, if you believe it should be some other sub-forum, please move it.
***
I have never considered acquiring any but a slow, deliberate cross-draw, followed by a two-handed grip when using my single-action hunting revolvers. Holsters' safety straps are intended for security rather than ease of drawing revolver from holster.

I am interested in learning a more fluid, somewhat quicker one-handed draw from a cross-draw holster - a holster I do not possess. Please identify non-"quick-draw" cross-draw holsters for single-action revolvers that incorporated some sort of gun security device that is both safe and able to be released by the [single] hand drawing the revolver.

If this were a double-action revolver, a thumb break would be an obvious solution. But a thumb break that engage underneath and behind the hammer spur would preclude the more fluid, somewhat quicker one-handed draw I want to learn. I hope there are shooters who have dealt with this issue successfully.

I have a Thad Rybka with a hammer thong catch on it. I have worked some with it in order to get it loose using my thumb.

You may want to check Simply Rugged's website for a cross draw holster that may fit your needs. Rob Leahy is a stand up guy and will work with you if he doesn't already have the holster you are looking for.

I have added a lot of thumb break snaps/straps to holsters no reason one couldn't do that.

I have a Merknickle cross draw holster for a FA 97 with a thumb break.
It is very comfortable to wear, and fast to draw one handed.