Apologies if this is old news, but I thought it might be of interest to the group!
Looks like microshift finally came out with a friction compatible shifter for their 9 speed advent shift system. I know there were folks looking to use the "new" clutch-type derailleurs, but keep with the friction and/or 9 speed setup they have, so this may be a solution to that...
Still no silver, and still trying to find a place to buy this dang thing, but looking forward to replacing the much bulkier trigger shifter with this.
Happy Holidays!
Collin in Oakland