Here's a maybe-dumb question but hear me out. I have no bikes with brifters, have never worked with them. Is the left RSX brifter friction? And if so, it'll handle either a double or triple, right?

I ask because I am considering putting brifters on my current project, a 1994 Bridgestone RB-T, which already has an RSX 3x7 drivetrain. Nothing against the OEM barends, just thinking of doing something different; also the grips would fit my riding posture. I know Microshift would provide a new option for staying 7 or 8 sp, but folks obviously really like the old RSX.