The SBH and Montado hammers are the same profile as seen from the side. Thumb reach is the same. I actually prefer the SBH pattern of thumbpad "checkering" (actually just horizontal grooves) because I'm a strong-side thumber and it's easy to let my thumb slip off the side when I finish the cocking stroke. That lets me drop my strong-side cocking thumb down onto my off-hand thumb at the moment of firing, forming the same sort of "thumb on thumb" Weaver-based hold Jeff Cooper used to teach for the 1911.
If you're an off-hand-cocker as is all too common in SASS, the Montado pattern might work better as it lets the off-hand thumb side backwards over the end of the hammer easier. In that style shooting the off-hand thumb crosses the back of the strong-side hand. Problem with that system is that first, it's power-limited...run big recoil and that system falls on it's face. In my opinion, it's also not good practice in that the transition to one-handed shooting isn't very "clean".
Dropping an SBH hammer in yourself isn't at all hard. Actual installation is a snap. Once in:
1) First make sure it's safe. With the gun totally unloaded, cock it and then finger off trigger, make sure it's not possible to push the hammer off the sear. Jiggle the hammer a bit, push on it some, etc.
2) Make sure the trigger pull isn't too light.
If it fails either of those tests, time to see a gunsmith.
Next:
3) With the gun UNLOADED, dry-fire it and hold keep holding the trigger back. If the hammer moves any as you ease the trigger forward, you have "hammer pinch". Another test for the same thing: with the trigger back, hammer down, push the hammer forward and hold it down. Now let up on the trigger. If the trigger doesn't go forward, the hammer is "pinching" the firing pin. Not cool. So what you do is, you cock it, wrap a strip of rag around the base of the hammer, file some with a small file on the hammer where it hits the transfer bar...NOT on the outer-most surface, on the "step" inside. Examine it a bit...if you still don't get it, no problem, use a toothpick and put a tiny drop of peanut butter on the transfer bar, and dry-fire it. Cock it, look for the peanut butter - that's where you file.
Take it REAL slow, keep any grit from dropping in there with the rag, wipe the shavings down each time you FREQUENTLY stop and see if your "pinch" is gone. You want to stop filing right when the pinch stops.