Loose Cannon - i can help you set it up , if you want , just PM me , i also have servers from GS and have this mutator set on both of them with no problem , so i'm pretty sure the mutator couldn't "ruin" your server.
BEEEEEES - just little feedback
If it would be possible , on the spawn (before the 1st wave starts) make the menu , so players can choose from the menu , because right now the "new" players to this mutator don't know that "poker knive" so they basically spawn and before we can explain them how to get the perk the wave starts. Also maybe some kinda message that pops up across the screen ,lets say when there is only like 2 zeds left ("to change perks press #5 key few times till your 'poker knive' is out and than swing it") would help those new players too, i think
I really like that "poker knive" , but needs little fix (imo) ,
i mean lets say i'm firebug and when i swing it to play as medic it changes the perk perfectly , only it doesn't give me the "lethal injection" unless i kill myself during the trader time and than respawn , same for the demo "self destruction bomb" , so if that coud be somehow fixed or put it into trader menu , so we can buy the "lethal injection" or that "suicidal bomb"
And if possible ,if the zerker would get like "belt with throwing knives" (so he can have more throwing knives(20) ) , i always manage to get them stuck in some zeds and than just can't find them anywhere to pick them up

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well , thanks again for this awesome fun mutator