There is no difference between the HBL 1.4 and 2.0 when it comes to features, the only difference is that the .elf loads via haxchi/browser exploit and the .rpx loads via its own system channel when signature patches are disabled. Both versions can load both .elf and .rpx files just fine after that, no need for anything like loadiine or whatever.
Thank you so much for clarification, and thank you yet again for your astounding contributions to every scene you turn your hand to.
You are a legend!