What scope did you end up with?
Like yourself I’ve also read about issues with vertically split rings and variable power scopes. Personally I’d just avoid vertically split rings altogether so those supposed problems don’t arise.
One thing that gets overlooked is how a one piece mount is essentially a QD mount. That is, the optic is set in the rings and will not change rotation from gun to gun but the attachment method, instead of being a 30 second removal to full install on the other gun, is now a 1 minute job. All you need is an inch pound torque wrench to tighten the clamps down to their recommended spec.
Personally I don’t see the benefit of a QD scope mount for a long range gun, especially a .50 caliber gun. The QD mount mechanisms will never be as accurate and repeatable in clamping force, nor can you measure that force applied to the rail at home.
Conceptually the QD aspect has merit but in practice it falls short due to the ease and quickness of removing a bolt clamped 1 piece mount.
Something to consider…