CAVEAT: Market changes might call for replacing .40 S&W with 10mm.
That said, the old .45-70 Government cartridge is showing a seeming resurgence. Ruger, having recently acquired Marlin, is producing their 1895 lever action in that caliber. (See TDF 116, TDF 119, TDF 158, and TDF 223 for examinations of lever-actions from a fudd-tactical perspective.) As a "brush gun" caliber, it does indeed have a niche place, and its ".45" factor fits with the icon and heritage value of that number.
That said, practicality and tactical realities must take a priority. The caliber remains in that niche, and resupply in a militia-type situation--or even a SHTF/WROL situation--would be sketchy.
Each of you must be the judge, but while perhaps this caliber is quite effective and might grow in popularity, and I have to hold it as fitting within the .45-caliber zone called for in a MAGA setting, it is at this time inadvisable as a regular go-to.
https://gundigest.com/rifles/ruger-made-marlin-1895-guide-gun-now-available