I have been asked about my opinion about this drysuit, so I figured I might as well post it publicly.
It's a great suit. I owned a Kokatat Meridian before and I honestly prefer the Amp. The material feels lighter still very breathable, the plastic zippers are easy to operate and the gaskets are softer than Kokatat. The cut is more form fitting too, so overall less bulk. Overall very pleased. It may be less durable long-term, but when it kicks the bucket I would gladly buy another one even if it happens sooner than it would with a Kokatat.
Note that these zippers require maintenance. The suit came with two tubes of TiZip lube. Each should last over a season. I clean and lube the zippers often and haven't had leaks yet (knock on wood).