My guess is in your example of only needing to sign scripts, sure, go for it if it works.
>It says it's version 1.1
About that 'copy' of altools via Transporter 1.1. Using this in terminal catalina/Xcode 11.x:
...returns altool Version 4.00.1181
What process did you use to extract/install/run altools from/via Transporter?
I'm talking about the copy in Transporter.app 1.1, from the App Store. Entering its path in Termial, I get:
Copyright (c) 2009-2018, Apple Inc. Version 1.1.1149
The version in Xcode 10.3 is 1.1.1138, so it's newer than that -- and that version was fine for notarizing (if limited to one upload at a time).
I just ran it using NSTask.
I'm actually considering using it instead of Xcode's version as part of SD Notary.