To simply answer the originally posted question: YES; PROCEED; DO IT!

I have a strong preference for hammers for most of the same reasons already stated in previous posts. They're incredibly well-balanced, offer some unique safety features, and are a joy to carry due to the roundness of their action (more so for back-action locks). Honestly, I'd be more concerned over the bolting mechanism and if you're comfortable with it for the purpose you intend to use it. Some people find the Jones underlever a bit slower than a side lever or top lever. Along those same lines you might consider rebounding v. non-rebounding locks. Non-rebounding locks require the additional step of placing the hammers at half-cock prior to unbolting the gun. I've practiced and timed myself with my shot timer just to satisfy my curiosity. I forget the numbers, there was a difference, but it was negligible. For me, the bottom line simply comes down to practice. You simply practice your motions until you get comfortable with whatever system you have in hand. This gives you the necessary level of confidence in any situation.