Why would it cause problems?
I usually wear my custom molded plugs during take off and landing, and had never any problem in more than 25 flights.
The only problem I had is when I slept on the seat row with my head laid on a seat (the 3 seats were free), one of my ears was clogged after that. I should have kept my head straight.
By the way, can you control your eustachian tubes "manually"? This helps controlling the pressure.
I usually wear my custom molded plugs during take off and landing, and had never any problem in more than 25 flights.
The only problem I had is when I slept on the seat row with my head laid on a seat (the 3 seats were free), one of my ears was clogged after that. I should have kept my head straight.
By the way, can you control your eustachian tubes "manually"? This helps controlling the pressure.