[Dovecot] passing quota to deliver via command line

Is there any way to pass things like "quota=" for the quota plugin to the deliver LDA via the command line or as an environment variable or whatever? I've got all the info I need in my MTA to avoid a userdb lookup in the LDA, but I still have to do the userdb query to get the per-user quota number (the default quota works fine, of course).

bill-dovecot@carpenter.ORG (WJCarpenter) PGP 0x91865119 38 95 1B 69 C9 C6 3D 25 73 46 32 04 69 D6 ED F3