I suspect that if you use a pole with enough flexibility to give a little, it will give so much that you'll have trouble getting a really tight pitch - and a tight pitch is key, in my experience. I have had a pole fail due to buckling under heavy wind load (one humongous gust on Shasta). That was my original Chouinard pole, and they replaced it under warranty. No problems with the fabric in that event, and I doubt you'd reach the point where fabric failure would be an issue unless you have something besides tent stakes to anchor to, as the load on the stakes gets pretty high
Just getting a tight pitch imposes a lot of load on the pole, and the only arrangement I can imagine that would have enough strength for that and yet still have some give would be if you used several smaller diameter poles together - but that would end up heavier than a single pole of larger diameter.
Ofcourse, if you use trekking poles and a coupling arrangement of some sort, and if the trekking poles have shock absorption, then that might work - although my tent instincts tell me that a rigid pole is going to be better.
One key thing is adjustablity. Unless you can adjust the length of the pole it is very hard to get a tight pitch, since the fabric stretch and the unevenness of the ground mean that you effectively need a slightly different length pole every time you set it up. My current pole adjusts in increments of about 3 1/2", and I find that is too much. Smaller increments, or infinite adjustability, is better. I also have an MSR Twin Peaks (kind of a double pyramid) and I use my flicklock poles with that, and the fine adjustment allows me to get a really nice tight pitch, and to tighten it once it stretches.