I claim the ornamental design for a combined firearm holster and belt, as shown and described.
FIG. 1 is a right, top perspective view showing my new design;
FIG. 2 is an inverted perspective view thereof;
FIG. 3 is a perspective view thereof, depicting a screw portion;
FIG. 4 is a left, top perspective view thereof, with the remainder of the design shown broken away for convenience of illustration;
FIG. 5 is an inverted perspective view thereof;
FIG. 6 is a top plan view thereof, it being understood that a bottom view is a mirror image thereof;
FIG. 7 is a rear elevation view thereof; and,
FIG. 8 is a front elevation view thereof.
Broken lines directly adjacent to claimed surfaces depict portions of the article of manufacture that are not included in the claim. All other broken lines in the drawings depict environmental subject matter that forms no part of the claimed design.