So can I, or do others put sealant in their non-tufo tubulars?

Granted, I would think this would make them non repairable, but Ive heard people swear it will clot and prevent a total flat at times, and may seal enough to pump back up good as new at a later date.

Downside, if it wont seal the hole, the tire is trashed.

Also, would it depend on the tire (ie - latex vs butyl tubed) such as contis vs vittorias?