It seems extremely easy to me to get the front bag quick released and over the shoulder when getting on a bus or something. In that comparison I go for Brompton because I need the tidy and tiny package when a bike gets folded and 30 seconds to do it is fast more than enough for me. Besides I consider Bromptons to have the most elegant solutions for bags and all. Tikit is reported to have a better ride even though some find it too flexy, however if I go that route I would look at the Birdy even though there is a price difference.
Tikit's folded size is large but what disappointed me was its folded shape: it seems very unbalanced, `thick` and untidy, and frequently reported to be awkward even when rolling it along holding the handle.