It is possible to order a standard model (not necessarily a custom guitar) without the electronics. It will only take a couple of weeks or months.
Although Taylor's ES system is cutting edge and one of the best in the business, I don't perform live, I just play for fun, so I have no need for electronics.
Personally, I also think of high-end guitars as collectable pieces. Solid wood guitars will only appreciate in value, especially since good wood is starting to get scarce. I remember Taylor's wood offerings 14 years ago were better than today because supply was obviously abundant back then (i.e., highly figured koas were standard on their K models, 900 and 700 series have Engelmann tops, Presentation series had Brazilian rosewood). But unless I use electronics on a regular basis, I will not order one with them since they become outdated by newer ones over time (I think of those Taylors with huge rectangular openings on the side for the Fishman electronics).