Miscanthus grasses can cause skin issues. I wear gloves and long sleeves plus long, heavy pants and solid shoes or boots when trimming them.
For a really big job I would tape my wrists to be sure my skin is well protected. The grass blades cause mechanical skin damage - they can slice the skin. Ouch.
Edited to add:
I probably should have also said that you can use a reciprocating say ( I would recommend using a cordless type to avoid accidentally cutting the power cord). There are some landscape companies that use a chain saw. I guess each person will find the best tool for the job.
