I've used this method, a kit supplied by Peter Fogwill.
Abovery *friendly* personely the business
Far harder wearing than Protectakote, quite easy to put down, but oh boy...the stink!
The smell hangs around for a week or two, but after a while it disappears completely.
It's really messy stuff to apply, but it only cost me £100 to do the floor of my Primastar van.
We all know that Speedliner is the top of the range, buts it's darn expensive, and isn't really one for DIY.
If the gear in your van is mostly fixed in place then go for Protectakote, but if your hose reel clatters about, or you like to throw it in and out of your van, and if you have trolleys that you drag in and out and so on, then Fibreglass (or speedliner if you can afford it) is a better option.
Ian