Wanting to get a couple of long runs in preparation for Chester marathon 2nd Oct, I did 16 mile LSR last Sunday and 21 miler today.
Re energy gels (SIS GO Gel) last week I wore a flip belt (zipper version) carried 3, lost one (didn't flip the belt) and the two gels were really warm. It was hot. It was still quite warm today, just not as bright and I wore my SPI Endurance belt with room for 6 gels through hooks. I took four and didn't lose any. Because they were on hooks and not tucked in anywhere close to my body, they didn't get as warm and tasted better.
This means I'm more likely to wear the SPI belt in October like I did for Paris. I did wear the flipbelt (which is a really nice snug fit) in Liverpool and had 2 gels (carried water/lucozade more as it was a hot day).