Just had a read of the Mintec document. He says to run the engine first time at 2k rpm without coolant. Never seen that done or heard of before. That's until the cylinder head is warm to touch, so presumably for a shortish time - maybe 5 mins or so? Maybe less. Then fill with coolant and run at 2k for 10 mins to bed in the cam lobes. I thought that doing the first 20 mins without stopping the engine was what most people seem to do for the cams.
Then the running in, low loads, not too much throttle opening. no more that 60% rev limit for 500 miles. Feels like the low-stress version of the running in method to me. Nothing specific to bed in the rings.
I think it's like many of these things, it doesn't really matter (eeek). I too have never had an engine that uses lots of oil because the rings haven't been bedded in properly and the Mintec dude doesn't seem to have a specific method for it.