That belt speed you're talking about is why I like the kalamazoo grinder better.
That said, you can still do plane irons just fine with the viel grinder if you stick to grinding them and doing final honing elsewhere.
And cambered irons where you don't have to be as perfect about the geometry, it also does well.
It does burn tools more easily than the kalamazoo grinder, though, especially if you're using a finer grit against the platen - it's easier to burn a tool against the platen with a trizact belt than it is to burn a tool on a dry grinder with an old gray wheel.