I always wondered how the MGS Client works exactly. As much I love the IMG forums, I never had much enticement to buy from the Store, because of the client. Not buying much Mac game these days anyway.
They have Borderlands 2 for $10! BUt seems like the Online crossplatform compatibility is mostly broken.
That's just how MGS works with Feral titles, I have no idea what they do for any other publisher. Feral is kinda unique in having their own activation system that they bring to any store they're at. Most other publishers just kinda go along with whatever DRM the store has, and throw on SecuROM for good measure. I wouldn't take a chance on any other games without a crazy-good sale, such as $10 Bioshock Infinite.
Borderlands 2 is worth it. You're getting a PC+Mac Steam key there, so again no MGS pain. The compatibility goes at the speed of Aspyr, as soon as they get caught up on the latest PC patch, another one goes out and breaks cross-platform again. There is no other Mac-ism holding it back, at some point the devs on BL2 will shift over to working on BL3, and Aspyr will finally be able to catch up. Guessing whether Aspyr still wants to finish the job at that point cracked my magic eight-ball, though.
You'll end up playing one toon solo on Mac, and a multiplayer toon in Bootcamp. As far as the baseline Borderlands experience goes, you pretty much have to be the same level to play multiplayer, so running multiple characters is a given anyway. Parallels 8 works reasonably with BL2, you'll pay maybe half the framerate for the privilege. The Radeon 6750M was enough to get through the game in Parallels, but it definitely hurt my already mediocre marksmanship. Still worth it for the convenience.