I know the high quality as I have several of their 9 and 10 pin race pin sprockets. Never used them.
I tried water drip and even a hose connected up to the nose with one of those click fittings. I didn't do it because of heat - I was just being a tight ass to see if I could reduce the expenses of running an aux oiler.
No - I tried to get one back in 2010 but my local GB supplier said he couldn't get anything like that - maybe they came in later?
A great company that went out of business, Left Coast Supplies, had the GB 3/8 picco bars in all sorts of lengths (16-40+"). Prices were super cheap too. I picked up some 25" bars for ~ $22 USD each. They also had 25" 63PMX milling chain loops for ~$20.
I wish I had stocked up more heavily.