Thanks for the quick replies.
Jim--the recommended stuff on Sanken's site doesn't seem to exist, or so I was told by Trew and one other supply house. The "equivalent" item from Rycote is clearly incompatible, or so Rycote says. Hency my confusion and the hope someone would say "I use this and it is perfect..."
I think the Cinela will be the solution, since it's clearly designed for the mic, but I was hoping to find something a bit cheaper...but as Ivanovich points out the expense may be worth it in this case.
Are Cinela windshields known to be pretty durable?