I'm wanting to get an adapter to use my Atlas on my JAE ARCA rails but wanted some opinions on which way to go. Looks like the BTC-PRO will bolt right on the Atlas but you have to use a knob to tighten it down. The SC-LR let's you use a throw lever to tighten it down but would also require an adapter for the Atlas and would cost twice as much as the BTC-PRO. Is the lever worth the extra or does the knob work well? Thanks for the input.