So my custom is just about to start production and I'm stuck between ordering a 5 or 6 string. My Biggest concern is that I'm able to slap on the bass. Its notoriously easier to slap on a 4, but I've also also been slappin' on a 5 (Ibanez) for quite a while now. Do people playing the ERBs have trouble slapping on them or is that common as well? Just curious, thanks to any responses.