[binc] Compatibility with other programs

I've searched the mailing lists and Googled for information and I  
think I'm correct to assume that I can switch from Courier to Binc,  
meaning that all functionality of the programs listed below will work  
with Binc. However, I'd like to verify with the list that my  
assumption is correct. Here's the list of software I use now (some  
programs are not directly related to IMAP but I decided to list them  
for completeness' sake):

qmail
courier-imap (cdb)
vqadmin
qmailadmin
sqwebmail
ezmlm
maildrop
simscan
spamd/spamc
clamav

Three remaining questions:

Will everything still work when using IMAPdir instead of maildir++?

How should I tackle quota?

How should I tackle shared folders?

-- 
Regards, Charles.