Carl, how humbuckery is the satch track on the low E, A, and D strings? Or is more like a warm single coil?
Well, my only experience with the Satch Track is with the one I have had in my Silo Special this weekend and please note that I am using the stock 250k volume pot, since everything in the guitar except for the Satch Track is exactly like it was when it left the factory. (Well, I have EB 10-46 instead of EB 9-42)
So far, I have only used it with my '76 Marshall Super Lead with two Marshall 4x12s loaded with G12M 25w. (I will try it with my Fender amp later.)
To make it work I had to lower the Satch Track all the way down and I raised it just a little bit to avoid it to rattle against the pickup cavity floor. The Satch Track is definitely designed to be used with a 500k volume pot. With the 250k I am using, it needs to be set low, otherwise it will be too bassy and muddy.
To answer your question, I'd say it sounds pretty much like Joe S is describing it in the presentation video. But in my words I'd say it's very PAF:ish in a vintage way. It's fat and punchy, but there is that open clarity that you get with some good PAFs. I was looking for something single coil sized that would work well with the Silo Special's bridge Virtual PAF when switching between bridge and neck pickups during solos and the stock single coil didn't match the Virtual PAF at all in that respect, although it provided me with a great strat neck pickup sound, which I miss, but which I an live without. (I have Strats.)
So my initial impression is that the Satch Track is the right neck pickup for me in this guitar. The new new position 3 sound surprised and impressed me, so I will keep that and rewire position 4 to become mid single coil only, because the new position 4 sound is not something I need.
The only question is if I should change the volume pot to 500k. The bridge pickup sounds perfekt now and it will be brighter with a 500k volume pot. The Satch Track will however really benefit from the additional high frequency addition a 500k load would give. But first I need to try it in a band situation. However for now I am just happy about how great my Silo Special feel and sounds. I should have bought a Silo Special a long time ago if I had known...