Currency requirements for commercial glider pilot

Recent discussions at my small club have centered around the cuurency
requirements for commercial glider pilots. My understanding is that a
pilot may not carry passengers unless they have had three take offs and
landings within the previous ninety days in an aircraft of the same
category, class and type if a type rating is required. So, working
backwards, I'm not aware of any type ratings associated with gliders.
The same is true, as I understand it, of class. That leaves only
category.

So, I believe that if a pilot has three takeoff and landings in any
glider in the past ninety days then that pilot is current to carry
passengers. I'm not aware of any differences in currency requirements
for private pilots versus commercial pilots.

Some club members, more experienced than I, contend that commercial
pilots must have three take offs and landings in the specific model (in
our case, G103) to be used for the ride.

What sayeth RAS ?

I'm not afraid to be wrong, it's happened before! If I am wrong, what
are the CFR's that point out the errors of my ways?

thanks,
Doug