Playing Tonks today I have yet to experience a single extra damage proc on both primary and secondary weapon.
Although I can not pinpoint the cause, at certain points you get both the max speed while you have your knife out, and long jump, while holding an AK-47. Both Snowy and I experienced this bug where we had 1.6 speed with an AK-47 out. Upon death, the speed bug resolved itself.
I also found that when supplies is leveled, it will override whatever gun you have picked up into an AK47. For example, I picked up an awp and survived the round. Upon respawning for the next round the AWP was gone and replaced with an AK-47. The AWP was not dropped for the gun, it simply disappeared.