I have a piece of old news:
The VO2X should have been operated on services 10, 17, 18, 22,
30, 51, 54, 55, 57, 58, 59, 60, 72, 97, 143, 174, 185, 333, 334 and
502 before their retirement, and not put it in JIS. This is because
they can parade the last NAC buses. Hopefully they can retire
before November 2010.
But there are always still LO3X, VO3X replacements - in that
case they extend the lifespans to the bare maximum.
Anyway, non-BSEP Volvo B9TL Wrights has started deploying JIS
services (246, 249, 251, 252, 254, 255 & 257) on 29 July
2014.