Yes and your bubble adds 3000 HP every 20 seconds if you are being attacked. If you aren't being attacked your bubble can be recast once the internal debuff is gone. I can promise you commandos would trade your bubble for their "heavy armor" and a 25% damage reduction on a 3 minute cool down.
You have a knockback, sprint, 30m stun (lolwut?... the class trying to get to you can only stun at 4m), 30m snare (lolwut?... the class trying to get to you can only snare at 10m), a slow attached to your filler nuke, etc...
An out of stealth scoundrel should theoretically never touch you because if you both use your snares on cool down he would never reach you.