I have a 3ph set, I use them a lot for moving pallets, because I have a few pallets and I can stack all sorts of stuff on them. I've been building a shed, and I put all my tools and materials on pallets, so I could put them away every night and get them out again every morning. Absolutely excellent.
We have a diesel tank that goes in the back of the truck to get oil for the heating boiler, it's on a pallet. I can put it in with the 3ph forks (on a loading ramp), if I had forks on the front end loader it'd be way more useful.
My new shed will have racks for all my implements. Once I get a new BX with quick attach, then I'll add a quick attach hitch to my forks, and I'll be able to put all the implements away using forks on the FEL.
In general any fetch and carry type tasks can be done easier with forks + pallet than with the bucket, unless you're moving actual bulk material (soil, gravel etc)