Reply to ER20 ear plugs, can they be cut down?

Seeing as most people replied to the original old thread I posted in I thought I'd make a new thread

They stick out your ears a ridiculous amount, so I'm wondering if that bit can be cut down without ruining the filtering effect?
Apart from not looking great it means the headphones catch when sliding them back.

If not, does anyone have any other recommendations of decent plugs I could wear out regularly and under the phones when DJing?
Obviously can't afford custom or I'd go that route.