I am considering a Mountainsmith DAY or TOUR lumbar pack. Has anyone used either of these and give me a +/-?

I normally use camelbaks or backpacks for day hikes but have been enjoying my running belts modified for more gear carry.

Been looking at reconstituting my LBE with buttpack or a Wildfire firefighter rig, but would need to add 32 oz lexan bottle holders. I intend to use the Mountainsmith Strapette harness that complements their packs.

Thanks for your feedback.