Quote from dLANCER »There are a lot of fun silver border cards, but many of them just break the game when given the opportunity. Cardboard Carapace versus Stocking Tiger
One is legitimately a fair card, the other is super duper broken.
If you're going to use silver border when sitting down with randoms, you better ask first, same goes with Gold border. The rules are Vintage Legal cards. Gold & silver, are not Vintage legal.
Gold border I think are fine, if only as proxies. We have one player that use a GB Gaea's Cradle because his other one is in a deck. Playing an entire GB deck wouldn't pass the smell test, though. Silver-bordered are...really up to your group. We occasionally allow a Strategy, Schmategy to surface but that's about it. It's good for a laugh or a change of pace now and then.
Now, if MaRo is being true to his word, there will be at least 6 playables in Commander in the basics and Steamflogger Boss. If they make other BB cards...who knows. Maybe there will be BB foil versions of some of the SB cards, and you can use those in your Commander decks. That would be...weird, but kinda cool.