Location, location .. PDX & NYC are different than small towns .. like AST

I own 2 Abus Locks.. 1 a combination chain(hardened) & integrated Key Lock, the other their Bordo Folding lock.
I have it's pouch mounted on the waterbottle mounts on my Bike Friday ..

Another bike, a NL Koga, has a ring lock on the front of its seat stays .. and a 1.4M plug in chain to go with it.
long enough to loop around the front wheel and the rack or signpost before plugging into the right side of the lock on the frame.

you will find that at Clever Cycles in PDX ... the Defender ring lock comes with a secure band mount for bikes that dont have a set of
integrated mounts ..(5x.8 Riv nuts in the case of the 7005 alloy Koga Frame )