Does it struggle with certain types of cans?
It can. Buyers rate can opening performance negatively, so this is a real and reported issue rather than a rare complaint. The guide post is designed to help you align cans correctly, which cuts down on off-centre cuts, but some rim shapes may still give it trouble. Test it on the cans you use most in the first days after it arrives.
How good is the built-in knife sharpener, really?
Proctor Silex offers it as a way to avoid buying a separate sharpening tool, and it is a genuine included feature. Like most compact sharpeners built into another appliance, expect it to handle routine edge touch-ups well but not to restore a badly dull or damaged blade the way a whetstone or a professional service would.
Is it likely to break or wear out quickly?
Durability is one of the themes buyers rate negatively, and some describe the opener as cheaply made, so a real share of units do develop faults. Plenty of other owners report no trouble, which suggests the problem is uneven quality rather than a flaw in every unit. Buying from a seller with an easy returns process is a sensible precaution.
How do I clean it without food residue building up?
Twist off the cutting lever and wash it. Proctor Silex designs the lever to come off for exactly this, and it stops old food staying under the blade and touching newly opened cans. Wipe the body with a damp cloth, and never immerse it.
Do I have to hold it while it cuts?
No. It shuts off automatically once the can is open, which Proctor Silex describes as freeing your hands for other kitchen tasks. Keep a hand near a tall or heavy can so it stays upright, and let the opener do the cutting.
Is the two-in-one can opener and knife sharpener worth it?
For a budget kitchen tool, getting a working electric can opener and a handy knife sharpener in one unit is good value. Buyers rate value for money as mixed rather than clearly positive, which tracks with the reports on can opening and durability. For buyers who get a good unit, it is a lot of usefulness for the money.