I'm amazed you even got a response to your e-mail.
Over the years I have sent Simms numerous-mails with questions about products prior to making a purchase. I have NEVER received a response.
The last time I had a question; after waiting three weeks with no response I e-mailed their European HQ who then e-mailed the US operation who FINIALLY responded.
Interestingly enough I e-mailed L.L. Bean with a question about their version of the same product and got an e-mail response in TWO HOURS! Needless to say I went with Bean's.