You could (irony fully understood) mount your t-track to a large sheet of MDF, and use pegs to hold it in place with the bench's dog holes.
I am partial to dog holes because that's how I've 'grown up'. I trust them for hard planing. The other thing I like is that once the right accessories are made like a planing stop or bench hook, the fixed position of the dog holes makes setting and resetting them up precisely for your ergonomics quick. With t-track the flexibility can be a pain when what I really want is repeatability. I feel that with my drill press which HAD t tracks for the fence.
I mean, I think t-tracks were great when I was making a wide variety of things. Nowadays, I tend to make the same kind of thing over and over again, and appreciate repeatability.
My bench is embarassing compared to most / all. It is layered MDF with an oak edge. I have a quick release vise and lift it onto sawhorses when I need to use it. I recessed two T-tracks on it in addition to dog holes. I have planing stops and other accessories that work with the tracks (square jigs for glue ups, etc.). I have hold downs and dogs for the dog holes. I use both the T-track and the dog holes.
I will build a new and better bench. I debate about the T-track for the new bench. Maybe in the infill for the split top?
Shawn
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"I resent having to use my brain to do your thinking"