I don't believe there's anything unique to MVP's plastics that would make them react differently to changes in temperature in comparison with other manufacturers. Not impossible but highly unlikely. But the more dynamic elements in the equation are another story. Externally, lower temps and humidity mean less air density and resistance during the flight. Internally and most importantly since this is what we can control, your subjective mental game and your objective muscle mechanics are both directly impacted. Whether you like playing in the cold more or less has a directional influence on the first, but either way, you're reacting to a new environment. Likewise, even and especially if everything feels the same at the surface, your body is exerting to maintain 98.6 in a different way. Your skin and pores are adapting to a different evaporative loss. Your muscles - like the plastic only more so - have a different elasticity.
All that to say, putting in the cold (or heat or humidity) is just different. If a different plastic helps you adjust, then by all means, but I think it'll be a filter for processing all the other, larger changes in the system.
Mandatory MVP content (and putter related!): still hunting for the Oregon Park 3 silver birdie, but I did clink a Tempo off the cage yesterday. Stressful couple weeks at work and it's probably taken 30 feet off my drive. So, funny that my best bid came from a less than ideal spot.
The Drift continues to earn a spot. Two parked drives yesterday on 11 over the creek. Really comfortable rim and a great starting point for anyone coming from a Discmania FD or similar.
The one cousin currently in the bag is a TSA Construct. Approached an unusually poor drive yesterday only to discover that in my distraction, I'd grabbed the Plasma Motion next door (bag organized by ascending speed and stability). The neutral 10 to meaty 9 transition isn't a gentle one.
And I do think I want to grab one of those Total Eclipse Proxies (or several). Something just looks right there.