I figured with the set it'd be hard to stealth around the place due to the fact you don't have a disguise and can't really cloak, meaning you can't get behind a enemy to get the backstab
and even if you do get the backstab, you can't really use the revolver unless you want to lose your disguise meaning you have no disguise and can't stealth by enemies.
the dead ringer provides cover for you in dangerous situations, it allows you to do impossible stuff and get out alive. (assuming you're not that bad) it's amazing for getting out of those spamfests at the start of the round, with just enough time to get behind enemy lines. despite the fact that it makes a loud decloak sound no one really notices it
do not ignore the fact you cant cloak, people hate it for a lot of reasons
however, you cannot disguise either, so that's a problem
but after you get your first disguise, you can start going
losing your disguise does not matter, what matters is staying alive, you can always get your disguise back.