Considering the next side-load option is 2x the price and heavier, it is a great cage.
Been using this on a gravel bike for 6 months with zero issues. As with most (if not all) alloy cages, it does adjust to hold bottles tighter if needed.
It holds my water bottles just fine. The side entry is nice and easy. I'm a bit concerned it will corrode over time, but if it does I'll just try something else. A bit heavy for someone obsessively concerned with weight.