My guess is yes, you more than likely stand a real good chance of losing the anchor and chain and a fair bit of warp too.
Why not just use the minimum strength reef anchor with easy to bend rod and keep the sarca for the sand and mud ?
Probably cheaper and easier to run a ball and ring with a reef anchor chain and warp set up and leave the stressfree set up with the sarca for non reef duty IMHO
Cheers
Chimo