For sure. I also do hummus as well as the final step in pesto. blender: blend, then pour over the solid stuff in the crust.
Quick breads (eg. banana bread, etc.), for sure. For example, when I make banana bread, I don't bother to mash the bananas, just put the big chunks in the blender with the eggs, oil, etc. blend, then add that to the dry ingredients in a bowl.
OTOH, some cakes require particular structure (eg. cream the butter, then add the eggs... or separate the eggs and whip the whites... etc.). Then the blender wouldn't work.
Huh! I've never seen that for a food processor. Cool.
My FP-blender is a small one, 3-cup capacity so I leave it on the counter and use it quite a bit to chop onions, cheese (that will be added to recipes), apples, bread (for crumbs), meat (eg ham for ham salad sandwiches), eggs (for egg salad), etc.
It only has the chopper blade and one disk, but in my case the benefits of leaving it on the counter outweigh the benefits of having flexibility with extra attachments. If I had enough space to store a
Sue(tm) Lead me not into temptation... I can find it myself!