I don't have Tygon, but I'm going the "cheap-ass" route, like you

.
I got a hold of cheap vinyl (1/2 ID, thin walled) for some preliminary tests, and noticed that the tubing was collapsing already. I know I have a good pump, but when the tube just sits in a bucket and collapses right there in front of me, it's a good indication (from this thread also) to me that thin walled won't cut it with my Little Giant 2-MDQ-SC.
I may very well go with braided vinyl, but you're right, it's not flexible!!! I'll have to try to warm it up, to see if it helps to slip it over my 1/2 CPVC barbs (5/8 OD).