[felixc]

That is incorrect. Name policy violations can result in your Google+ profile being suspended, but nothing at all will happen to your Gmail or other services.

Gmail accounts only get shut down if the user is a spammer, or under 13 (blame the law), or some other extreme circumstance like that. Having a non-"real" name will not cause that.

[suivix]

I know they say this, but I don't trust them that they'd ban you here but not there. I'd rather avoid it and know my Gmail account is 100% secure (or as close as it can be).