I cant see how those sides are comfy.
You know what, I thought the same. But Lee tells me they're fine, and he's not exactly slim hipped.
Maybe you just need some of your own padding for these. In which case I'll be fine.
I thought the same when these first came out, I've sat in Lee's and I'm even less slim hipped and they're well comfy, no problem with those flat bits at all.