The onion slicer gets a lot of use at my house. I love grilled onions (brats, fajitas, grilled veggies) and it is so easy to grab and slice.
I think even Julia Child would like it. For me, it is faster so no tears when slicing.
There are some Pampered Chef things I think are more trouble than they are worth. I use the plastic measuring cup that slides up and down for dry/wet ingredient but I don’t use it the right way as it is too much trouble. I just use the liquid side and pour things, even dry stuff. Toast tongs? Please (I got them as prizes or for free as a bonus). If I remember to use the serving things like the ‘mini offset server’, great, but usually I forget I have it.
I’ve never used the fancy bread tubes, but I got them at the thrift store for $1 so why not?