Just purchased this lock after viewing many options, for me ideal, but that later.
I have just bought a Specialized Crosstrail with Hydraulic disc brakes, this leaves the "V" brake braze-ons free (actually have a bolt in them) this lock fits them perfectly with the 2 caphead bolts provided, took me 15 mins start to finish. Possible downside ~ if the bike was left unlocked someone could remove the lock if they knew how the bolt concealing covers are removed, but if the bike were unlocked they could take the bike anyway.
It is also possible to add a second fixing, the lock has a plate that you can insert 2 small coachbolts through then secure to the lock with 3 self tappers (this is in effect at the rear of the ABUS name plate), I then made a small retaining plate which clamps the top of the lock to the top of the seat stays, there is a plastic spacer that fits between the lock and the plate I made.
Abus could look at providing one with the kit.
Adding this extra fixing added about 40 mins to the fitting time. The additional cable or chain are well worth buying, but I did wait until I knew the lock fitted before buying one.
ABUS take note, I've contacted many dealers by e-mail and phone they have very little understanding of "IF" or "HOW" this lock fits to bikes, yet for the majority of leisure cyclists this would be ideal.
So, a good lock for me, why? ~ I'm retired and cycle for fitness and fun, I do not normally leave my bike where I cannot see it, coffee stops, pub stops etc. I wanted a lock that allowed me to use a water bottle fitted in the frame and was not too heavy or cumbersome and this fits the bill perfectly. I do use additional locks ~ "U" lock's & chain when away with the caravan and leaving the bikes locked to the van.
Final comment, only suitable for city / town worker use with additional locks.