Hiya mate nice feedback.
Picked one up recently and as you say the big slug carries a lot of poke down range.
It is a very efficient caliber.
I've found the barrel to be the least pellet fussy of many guns I've owned.
Only minor scope adjustments required between Bisley super fields @ 24 grain and Gamo Hunter @20.3 grain plus the H@N's @ 19.9 grain.

The slug energy transfer so far is quite impressive, yet to use on pest control but standard pop tins of water show massive hydraulic shock in comaprison with my .177 and .22 rifles, they have been split top to bottom as well as punctured both sides @30 yards.
Apple shooting comparisons ( they are in season!) sees the .25 literally ripping them apart rather than punching clean through, again compared to .177 and .22 at 30 yards.

Really can't see this as problem on pest control within sensible ranges, but so far the close range only argument isn't holding water.
Probably in the same league as a heavy .22 in the lower pellet weights but those superfields are quite dramatic on inanimate targets so far