My prescription multi-focals are both plastic-safety lenses and indoor-outdoor transition. They suit me fine and I can see while riding. Neither my eyewear or nor myself are particularly cool though.

Not exactly, they are both M frames but the Wallace model is the Pro M frame, which doesn't fold/close, where as the Armstrong is the regualar M frame that does fold/close. I "think" both lenses are about the same price, from my purchases anyways.