Piston wall squirter is defiantly not a new idea. They were needed with the oil and metals available then. With the oil we have now there is little need for the rods to be drilled.
And I would expect if it has not happened yet we will not be seeing the rod drillings for emission reasons. Part of why todays oil is changing.

Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.