Hermès has another bag that has Birkin level utility, if not intense snob appeal that solves the buckle issue by not having one. Enter the Garden Party:
J McLaughlin has perfected it and it's on sale!
Mia tote. The two bags are almost exactly identical (there are two side snaps on the Mia as well, you just can't see them. LAM picked this up for me to carry to work (you know briefcase/purse/carry-on) bag that does everything. HE actually fell in love with it and decided that I had to have it. It is positively scrummy with the softest leather I have ever felt, nice little brass feet, a lovely brushed lining, organizer pockets inside and deceptive capacity (you could carry a small child in this bag, yet it doesn't feel huge). I expect to use and enjoy mine for a very, very long time.