SSL + Basic Auth

I am trying to setup a RESTful web service where GET is open to all but
POST, PUT, and DELETE are restricted to authorized users.  I have a
database of users that is checked using Basic Auth.  So far, so good.  I
*also* want to make it possible to issue certificates (from a
home-rolled CA) to users if they wish, so they can bypass the
username/password dialogues.  Try as I might, I simply cannot get an
either/or setup working where certs are checked and basic auth is
skipped if a valid cert is found.  No matter what, the Basic Auth dialog
always appears.  It also appears that the <Limit> directive does not
work with RequireSSL directives?  Is there a way to limit only certain
methods using SSL?  I've tried +FakeBasicAuth but then the database
lookup code rejects the username (of course).  Here's what my config
looks like right now.  I would really appreciate any pointers or
suggestions.  Thanks so much for your time.

--BEGIN CONFIG--
<Directory "/home/html/games/rest">
	SSLOptions +StdEnvVars
	AllowOverride all
	Order deny,allow
	Allow from all
	Satisfy any

	SSLRequireSSL
	SSLRequire           %{SSL_CIPHER_USEKEYSIZE} >= 128
	SSLRequire ( \
		%{SSL_CLIENT_S_DN_O} eq "Super Duper Games" \
		and %{SSL_CLIENT_S_DN_OU} eq "REST Server" \
	)


	AuthType	Basic
	AuthBasicProvider dbd
	AuthDBDUserPWQuery "SELECT encrypt(password) FROM users WHERE username=%s"
	AuthName	 "Super Duper Games"

	<limit PUT POST DELETE>
		Require		valid-user
	</limit>
</Directory>
--END CONFIG--

-- 
Aaron Dalton       |   Super Duper Games
[email protected]   |   http://superdupergames.org