You really must get a pair. The dark red ones are so hot and they'll make you feel so sexy, so unmommy-like. For me, they're actually easier to walk in than the VPs because the closed toe makes my foot feel more secure for some reason.
Honestly I'd suggest trying it on first. I personally don't find the Rolando to be one of the more comfortable CL's and would only wear it to events requiring little walking/standing. But it could vary a bit from individual to individual, so I highly recommend getting a chance to try them on first and see how they fit.
They are difficult to walk in. I think it's because the toebox is so small so there's almost nowhere for your foot to pull up on... if that makes sense. They're so sexy that I can't help but wear them around anyway