Myself I like to carry in/on the van different ladders & accessories for different task as I've found no ladder suites every job
Conservatory ladder - brilliant bit of kit even when used without the roof ladder section
Small combi ladder - handy for inside conny work etc
12 rung combi triple with ankalad stabiliser fitted - roofline work and also can be used as a free standing ladder safely with the ankalad deployed. Top section comes so can also be used for other things too.
Various types of standoffs - microlite standoff (great for resting on roof tiles/flat roofs, Ladder Max Pro corner standoff (imported from the states) also carry a chepo V standoff that I hardly ever use now.
Hopups
Ladders spurs
etc
Plus various other ladders that I store and take them out if need be.