The locking mechanism does fit under the hole delete without modification. As far as breaking the cover, if you we're going for a long drive away from everyone you know, bring tools. Otherwise just call a friend to come get you if your stranded and come back with a Dremel tool to cut a hole to the lock.
'09 E90 M3 | VF620 SC tuned and coded by BPM | KW V3 | ARC Wheels w/AD08 | OnEighty Lights | AA Signature Exhaust | BMW Performance and IND trim | Recaro Profi and child seats
'13 35i M-Sport X3 | JB4 Stage 1 | BMS Intake | H&R Springs | Gloss black grill | CF Wrap and Coded by me