They're good but if you plan on swapping them it's not a 2 minute job as you need to get the torque just right, likewise you'll need a big torque wrench. I guess a 1 sided Vector and a Stages cost about the same. Also I don't really know calibration consistency if you chance the Vectors between bikes.
What pedals do you use at the moment? I'd say use a Vector or Stages, whichever you can find cheapest that fits. One sided is will be fine, I guess with Vector you could always upgrade to dual sided later.
They're good but if you plan on swapping them it's not a 2 minute job as you need to get the torque just right, likewise you'll need a big torque wrench. I guess a 1 sided Vector and a Stages cost about the same. Also I don't really know calibration consistency if you chance the Vectors between bikes.