Ariat Grasmeres for skinny legs?

[now_loves_mares]

Santa is asking me what I'd like for Christmas. I have been eyeing up Grasmeres but read a couple of things that worry me. I have very skinny legs and struggle to find boots to fit. I bought a second hand pair of Ariats (not Grasmeres) off ebay and they had too much of a "bulge" in the calf. My calfs don't particularly bulge, so want a pair of streamlined boots. I read a couple of comments on here, one from someone who bought a pair that bulged too much at the calf (think they were "full" calf though); and someone else said they didn't ride in them as they had skinny legs and they slipped down when they rode. I particularly want them to ride in (far too muddy fields to wear them for anything else!)

Here's a photo, (excuse the riding, I was in safety position on a baby horse!)only one I can find of me wearing my competition boots. Would Grasmeres fit do you think? I know the laces mean they are adjustable, but the overall cut would still have to be quite streamlined for them to fit I think?