You don't want them for audio monitors.

You mean from a technical standpoint David? - they're not as good as simple ear-sealing phones? I must say I use a pair of noise-cancelling Aiwa phones on my Z1 and feel it helps to let me her what the mics are delivering rather than what the noisy guests are delivering direct to my ears.

I don't think that isolating earphones are the best option but wanted to know if they will be good enough to monitor what the camera audio is like during the shoot without having to wear those large Sony headphones and forgive me if i am wrong but the camera audio isn't exactly top notoch CD quality and thus surely the shure SE210 would be up for the job.
p.s. I wear a turban since i am a Sikh so the earphones are my best option but just wanted to know if the are up to the job on a technical basis.

Try the sony MDR-VDJ700 cans i have two sets of them and they seem to have the same drivers as the 7506 which I also have. They are a bit more robust than the 7506 and certainly sound jst as good.
Sony MDR-V700DJ Monitor Series Headphones - Compare Prices and Product Reviews

wow.....this post i found on this forum by Steve House has just melted away my ignorance on choosing headphones for camera audio monitoring.....
"Sorry, but 'audiophile' headphones such as those are a poor choice for monitoring, especially since those Bose are also 'noise reduction' headphones. The noise reduction is applying signal processing which is altering what you hear. Similarly, they are designed to shape and contour the sound so it sounds like what the manufacturer thinks people want their music to sound like. This is all well and good when you're listening to music for pleasure but that altering of the original signal is exactly what you DON'T want when you're monitoring. You need to hear the original signal as it actually is in order to evaluate it, not filtered and equalized to make it sound better than it is. The industry standard monitors, found on feature film sets the world over, are the Sony MDR7506, with Sennheiser HD25 or HD280 in second place, and a smattering of Beyerdynamics. And the Sony's cost a third, the Senny's a half, of what the Bose cost."