Multiple Brummels

[benz]

I've read or heard somewhere that three brummels in a row in HM line is as good as a splice. Anyone tested this? If so, what are the pros and cons compared with a 72-diameter bury? And if three brummels, would you still hide the end by burying? How about a taper in it? The advantage I can see it that it makes a far shorter splice than a standard long bury.
Thanks in advance,
Ben