You'd go onto the "GWR" side (ie not HSS, the former high speed drivers). GWR sign as far as Paddington in the east, Penzance in the west, plus Laira depot, Gunnislake, Looe, and Newquay. The lower links start with Par to Exeter plus Gunnislake, Looe and Laira, however most drivers progress to signing Penzance and Reading within a few years. The top link does Paddington and this is currently being expanded. My guess is eventually everyone will do Paddington as us HSS drivers gradually retire and hand the work over to GWR.
It's a great depot for route variety, however less good for start and finish times which are generally very early or very late, especially on the GWR side. Traction would be 80x, 150s, followed shortly after by 175s. GWR side top link also to begin learning class 57s from December (to share the work presumably with HSS) .
Decent depot, quite close knit and management generally good, you could do alot worse.
Oh, and traction wise includes Voyagers within Laira depot as well.
