Pattern / worktable

I was thinking about making the pattern for the sides of my tear. Most of the things I have made in the past did not require a pattern, so I'm trying to figure out the best way to make one.
What if I made the pattern out of 3/4 particle board, then attached legs to the bottom, so I could also use it as my workbench. It would be the right shape to clamp everything down, and wouldn't move around when I was working on it. When looking at pictures of other peoples construction, it seems like clamping things (framing) down it might be a problem, when the work bench is rectangular, and the part you are building is sort of an oval (unless I screwed clamps to the bench like Steve does).
The question is, would it work as a work table and a pattern, or should the pattern be something seperate that I can flip over and move around (Could I make both sides with just one side of the pattern facing up)?
What if I made the pattern out of 3/4 particle board, then attached legs to the bottom, so I could also use it as my workbench. It would be the right shape to clamp everything down, and wouldn't move around when I was working on it. When looking at pictures of other peoples construction, it seems like clamping things (framing) down it might be a problem, when the work bench is rectangular, and the part you are building is sort of an oval (unless I screwed clamps to the bench like Steve does).
The question is, would it work as a work table and a pattern, or should the pattern be something seperate that I can flip over and move around (Could I make both sides with just one side of the pattern facing up)?