I've been wanting to buy the Pandora wedges for a while now but what's stopping me is the lack of any kind of support at the back - I'm worried they'll be uncomfortable and clompy with my heel lifting from the shoe every time I take a step. Flip flops are one thing because they're thin and light but I'm not sure how comfortable flip-flopping around in a heavier wedge will be. Can anyone with Pandoras (or perhaps even similar styles with no support in the back) please tell me if they're uncomfortable or if you get used to it?