I have WCS - confirmed with a 24 hour BP recording twice. The second time, the doctor said she could tell what time I had set off to the clinic to have the monitor taken off as the readings shot up! However, I can take it at home with no problems,and as I had the second 24 hour recording done because I went to see the doctor when I'd got raised readings at home a couple of times, they 'trust me' to tell them if my BP goes up and don't worry too much in clinic!
Maybe, if you bought a machine for home and did it every day, you'd get into a routine and be able to get 'proper' readings without the panic setting in?