There are not too may live-recordings in ambient music. With obvious reason: most of it is recorded in (home) studios and is optimized for use in private spaces and/or exhibition rooms.
The noisy live club environment is not the best place to consume ambient music.
Apart from that, ambient gigs and laptop concerts are not noted for their intense live experience. At most gigs, the performing musician might as well be checking his mail after starting the pre-recorded sequence.…the public wouldn’t really notice.
I remember watching a Biosphere live gig in Amsterdam Paradiso, way back in 2002.
Paradiso, like any club in Holland, is noted for it’s noisy crowd, chatting and twittering all through the concert. That’s the effect of having a bar INSIDE the concert hall (and of people coming to a Festival instead of devotees coming to a single concert).