I did on my first 3 x 9 x 42 SII, then dunked it is a pan of water just off a soft boil. No de-gassing, no internal fogging.
At one time, I used to do this as a matter of course-- but now, really see no great benefit to it-- as no hunting situation will give you a 200 degree temperature swing in a few seconds. It also does not mean that it will withstand the same punishment 10, 20, or 30 times, nor 4 years down the road. The only scope that has ever degassed on me in the field was a Leupold Vari-X III.
The same questions are asked over and over again regarding scopes, regarding "will it take the recoil?" Yet, recoil is never defined-- as there is no such thing as ".375 H & H" recoil in reality. In a 7 lb. gun or a 14 lb. gun-- there's a 50% swing to consider.
The only thing I can tell anyone about a "one incident / one example" scope when asked "how long it will last?," it that it is until it breaks.
http://www.chuckhawks.com/scope_death.htm