I have several on Microtome strops. All Neil Miller leather. The Bridle with 3 coats of oil is super hard draw. Best to start with heavy blades/wedges. The bridle w/1 coat of oil is great all-around for a heavier draw strop. Both are like velvet.
I particularly like the feel of the European tallow tanned. Harder and firmer, yet pleasant to use. It feels as if it is doing something, and it surely does! Great for larger concaves! I always finish up my after-honing on a russet cowhide strop which I over-oiled a while back. Super light (and oils the bevel good!). I rub it hard with a towel before and after use. The oil is coming out and it is getting better! The towel is getting oily!
On a side note, I like different strops for different razors sometimes. Just like a particular brush for a certain soap. I am going to get another hanging strop. I like using them on heavier wedges. I think I will stay safe and get the lighter-draw bridle. JMO
Tom