Their are several variations on the "Dry Saw" concept available here in the states. Delta makes one that I am most familiar with. I think Milwaukee also has one available.
The biggest draw back to the "dry saw" is the noise, which is easily overcome with the use of ear muffs. The BIGGEST upside is the lack of grinder grit flying around the shop. The swarf is just metal chips and can be easily directed into a bucket.
An acquaintance, recently had a job that required him to section some 4130 plate into 2'X2' squares. Lacking a shear capable of handling that size sheet, he used one of these and a worm drive hand saw. The results were exceptional! Nice clean, smooth cuts with no distortion.
http://www.mytoolstore.com/tenryu/steelp.htmlI have been considering an older wood miter saw modified with clamping vise and the addition of one of these blades. The old cast iron miter saws come up on CraigsList for short money occasionally. DUNNO, just thinking out loud here (that clanging sound you hear is the BB rattling around in the boxcar).
Having used a BEWO saw at the helicopter company I can assure you that it is a very civilized method of parting metal.