It's OS enough in the short approach game, for sure. But it's at least possible that they're looking to "break into" or at least get close to the Zone market, so to speak.
My problem is, I throw a sloppy hyzer. I'm much more comfortable throwing finesse anny angles. So a beefier Envy (like a Resistor-ish putter) would appeal to me for more versatility in the <200' department.
For me, the longer the drive, the less the Envy differs from the Proxy.
Really, the Proxy is already dislodging the Envy in my bag, if I'm honest. It really wouldn't take an Envy OS to do that.