Uber charging "weak" Classes

[Turtle]

I don't play medic a lot but when I do I enjoy critskrig gamble for teammates, like funny times when your soldiers have 0 hours and can't hit ♥♥♥♥ but then you just say your engi with stock shotgun, go do a crime, and he annihilate half of enemy team, that's kinda funny.
So to question, do you Uber classes you shouldn't really uber in normal scenario for fun sometimes or you better switch to soldier or demo if your power classes suck ass?

[Mina]

I love ubering classes I shouldn’t, I do it all the time and hope for opportunities; Medics, Spies, Engineers or unconventional classes such as Demoknight, Fat scout, Melee only Scout.

I choose wisely now, some are afraid to push with an uber or cower

[Stoque]

Uber the spy disguised as the enemy

[Walter Clements]

I ubered a spy once and it worked

[Watereaters]

The only joke uber target which gets results is Engineer.

[rad_knight]

depends on what i'm using.

if i'm using Crtis, i'll usually wait for a pyro, demo, or heavy depending on the situation but if i get impatient pretty much anything with a shotgun will do the trick. the only class i actively won't uber with crits is soldier, because i've had way to many situations where the only person a crtis soldier manages to kill is themself.

with stock uber, half the time i use my uber is because i'm about to die, so in that case i'll just put it on literally the first non-soldier i see.