Just be aware that with /that/ 'abbey' rule, you'll catch 'abbey' *anywhere* in the URL, including as a subword of something, such as: http://www.example.com/directory/cities/blabbeyville/coffeeshops.html This may or may not be desired. =)
Fortunately that's desired in this case so I can stick my head in the sand and not worry about it for now. ;-)
Nick