I don't the source of your pear tree combo, but they certainly can be for real. I have a pear to which I have grafted several varieties.

Be aware that combos can have their issues: one variety may try to overgrow the tree, another may do poorly, one or more may be fire-blight susceptible and bring down the whole tree. But I like mine. Pears are easy to graft, too, and you may find yourself adding "just one more" as I have several times!

Good luck,

M

I agree matching pears on one tree is very tricky. We planted several for a client and 5 years later they have done horrible. Although I have seen it done very successful up to 6 varieties doing well on one tree.
The tree was an old tree grafted over with rare varieties. so it's always worth a try
Good luck
happy growing
Cory

too bad, but not much is easy when it comes to growing fruit. I need more land! Thanks all.