Slim_Slag,
Depends on the cloud base
I hope you're not suggesting that you'd try IMC spinning given a certain cloudbase?
I have heard of an old IR examiner who would use a spin as an IF UP for experienced guys during tests - but even this was flown VMC and to the horror of most/all other examiners.
Definately not something i'd ever give an IR candidate on their rating
...on the rationale that any pilot who might accidentally enter a spin on instruments does not deserve a rating of any kind!