Congrats, what did you get?
Yes, like HDS/Novatac, Anduril requires an eSwitch
Anduril lights with tailswitches, such as the FWAA, require a signal tube in the body, similar to the function of the spring in a novatac body tube.
Anduril lights with sideswitches in the head, avoid the need for a signal tube.
imo Anduril offers the ramping UI benefits of the discontinued Nitecore D10 (AA/14500 like SP10 Pro), and the discontinued Nitecore EX10 (16340 like SC21 Pro)
fwiw, the SC21 Pro also has built in charging. illuminated switch button, and a tailmagnet.
Review here