Well after sitting on the fence for some time while keeping in touch with this thread I decided to give it a go since I've been continually frustrated with my inability to get a good initial edge on my chisels, never mind one that lasts. Full disclosure, I'm a fairly new woodworker but early on when I bought my bench chisels I decided to buy once, cry once, and purchased the Veritas PM-V11 ones. I've always struggled to get a good edge on these using a 1000grit diamond stone, 6000 grit Cerax ceramic and honing with green compound on a piece of MDF. I also find using the honing guide time consuming and fiddly, so last night I decided to hollow grind these chisels as an aid to freehand sharpening.
I decided to grind them to 25 degrees overall which given the nature of a hollow grind of course means at the point the angle is somewhat less than that, then gave them a quick freehand hone on the diamond stone which gives a small secondary bevel once again at 25 degrees, then on to the green compound on a buffing wheel. To say the results were encouraging is a major understatement, this is the first time I've ever got these chisels to feel truly sharp. I can't yet comment on edge durability since I've only tried them so far for some gentle paring, but given my sharpening frustrations thus far with these chisels I'm already thinking this is a major advancement for me and my only modest sharpening skills.
I'm sure I can get even better at this, but even at this point it's a big thumbs up for me, and that's putting it mildly, to be honest I'm bloody delighted to be able to finally get these rather expensive chisels to work properly.