I figured it was time to upgrade from my Maker's Bag, and the Trinity was finally here....
I will say this, it has brought more order to my life that I ever expected. Everything has a place -- and my laptop is neither loose nor protected by stiff padding that made it hard to carry as an everyday messenger. I think they pulled it off. As a "personal item" carry-on it is perfect under the seat; it makes my endless in-flight juggling of devices and cables and batteries and snacks quick and efficient.
It is very expensive, though, compared to other options. Arguably, it's a bag that doesn't need all the extra bibs and bobs you need to get a Maker's Bag to be a reasonable analogue, but even a fully kitted out Maker's Bag with organizers and cubes and pouches is much cheaper. For me, it was worth it, but definitely something to consider before you pay the money for it.
Also, don't expect it to be a great backpack. I've used "convertible" packs in the past, and they all are mediocre backpacks at best. I'm disappointed they didn't put more into the pack straps (more padding, more stability), but for me the straps are an "in a pinch" form factor (like needing your hands free). If you're buying this primarily for the backpack form factor, be aware.
On the whole, I'd 100% buy it again and you can pry it from my cold, dead fingers. But ask yourself if you need this much structure and ease of use. This is the best structured Tom Bihn bag, but I got a lot of life out of my Maker's Bag…