These shoes are hard to find now. You may want to check out the Asics Gel Blast 4.
This is a picture of the Gel Blast 3 model that El Shorbagy wears, in blue:
El Shorbagy has also been seen with this model:
And here are the two models seen on Iskandar:
I haven’t used the Gel Blast 3 personally but for the last few years I have been enjoying another shoe in the Asics line, the Asics Gel 1130V.
According to Asics these Gel Blast 3 shoes have “Rynoskin forefoot reinforcement” to protect against toe drag. I looked into Rynoskin a little bit. Apparently it was originally designed for use in clothing, to protect against insect bites. It’s a breathable but very sturdy fabric, so it makes sense that it’s made its way into squash shoes. Their Website includes these pictures as examples of the different ways it can be used:
Hmm. I’m not sure what to make of all that, but I do know Asics make good squash shoes.