I don't know the Canyon but I've been stewing on this topic.
If service work is your bread and butter (or you make enough off those spur of the moment calls...) you don't have any choice really but to drive some sort of "rolling gang box and supply shop" every day and pay whatever that may be. The diesel Freightliner (or similar) may be a moderate option.
But, if new construction is your main gig... then think outside the box some. A rollback tow truck could have your 'mobilization gear' (gangboxes/ladders/etc) delivered once and have all your heavier material delivered too; then drive an econo-box with your hand tools like a green helper. Tools don't require that much room, maybe something big enough to hold a 6 foot ladder.
Having a second vehicle (and second set of "basic" tools) is a false economy. Whatever you pay to buy, register, insure, equip, maintain, etc is going to add up quick. Divide that number by $5/gallon gas and then calculate how many miles will it take over how long a time to equal let alone get you ahead? And you still have to buy fuel for it, Ya know?
