Used the TD25 for a long weekend road trip for Autocamping with family and friends. It was an ideal size for a variety of casual and active/hiking type clothes and gear. I packed it with a Peak Design size medium packing cube, a TPC 8, 2 jackets (Patagonia nano puff and another Patagonia jacket), and random other items. Everything fit with little issue, except for the PD cube being a little tall for the bag (it still zipped just fine).
The size is really versatile - prior to this trip, I used it for an office day to haul my usual office load (laptop, A5 and B5 journal, various work accessories, snacks, Yeti rambler 36 oz, fellow coffee traveller mug, etc). It fit everything better than my TB20. I love the TB20, but it tends to puff out with my normal work loadout.
With several more weekend road trips I anticipate this year, the TD25 will be an ideal companion. It’ll likely be my work bag between trips.