Anybody ever try wearing tyvek booties for riding in the rain?

I've read some backpacking threads where people have used tyvec booties as cheap and lightweight overshoes, removing the soles and using duct tape across the toes and heel to hold them on.

No, but next time I ride by a construction site when it's raining, I'll keep it in mind.

OP - don't know that I'd use Tyvek for overboots but it would probably work as an internal liner for cold weather. Will have to give it a try.

No need for a construction site, Fedex and USPS use Tyvek mailer envelopes. I always save these and use them to wrap up stuff that goes in my panniers.

I started a related thread within the Winter Cycling forum in case you want to check a more complete post:

Poor Man's Neos Overboots: Tyvek booties over boot liners

I don't use Tyvek for rain booties, but I have been thinking about making a pair; I do have a tent that I made from Tyvek though. I currently use home-made booties made of some sort of foil-covered bubble-wrap insulation. It works great, at least in the moderate rains and temperatures we get here in the Willamette Valley.

I was using a Tyvek fedex shipping pack for a seat cover and found that it wasn't as water tight as a regular grocery bag. A couple of times I left my bike in the rain and found the rainwater had penetrated my saddle (!). Needless to say I'm back to grocery bags again.

If it is just your feet that you are looking to keep dry, use some grocery store vegetable/meat bags between your shoes and socks.