As a first-time user of it, I'm finding Tru-Oil easy to use. It's not as quick or immediate as spraying, but I can't do that for at least another 2-3 months when the weather warms up, so it means I can build a guitar in the winter. I probably should have used at least two coats of the Tru-Oil sealer, as I've spent a bit of time just adding layers to fill-in sinkage into the grain, but with a veneer top, you don't want to spend too much time sanding the sealer back to a flat finish. But I'll do at least two coats of that when I get to putting the finish on the ESB-4 (once I've routed the pickup cavities).
The first few coats of Tru-Oil will take up some stain from the body, so beware runs down the sides and onto the back with those coats. Mask up if necessary especially if you've got different top and side colours. I ended up scraping coloured Tru-Oil marks off the bindings a couple of times.