They are not playable. Never played them.
Wait... do the weird openings have to be playable?
They are completely playable
Yes, but for the Ware Opening, Crab Variation, you would require you're opponent to blunder to at least equalize.
Incidentally, the Nimzo-Larsen Attack is "weird" and yet completely sound, although White can't expect to achieve an advantage in every single line.
Nimzo-Larsen Attack: Couldn't this opening just transpose to other openings...it seems very flexible.
B00: Caro-Kann Defense: Hillbilly Attack