update: Marina Bar is closed. She found a buyer who took over her place and a couple of other bars next to hers, and combined them into one big bar looking out at the boxing ring. Also reports I've heard are that Shamrock is now mixed GGs and LBs, with mostly GGs. I did see at least one LB working at another bar near Shamrock but it wasn't a LB bar.
One of the staff at Friends Corner told me it is now the only 'ladyboys only' bar in Chiang Mai.
Yes, Shamrock is both GG amd LB. Were about even when I was there. Too bad about Marina bar. It also seems that some other bars on Loh Kroh have an lb or 2 as well these days.
Friend's corner bar is certainly the place to be in CM for the lb scene. Nice bar, fun times and very nice girls. Vinny(pronounced Winny) is an absolute doll.
There is quite a number of freelance lb out there in CM as well