I would advice against it, brings nothing to gain from, microsofts default ahci is better from stability and compatibity viewpoint.
I would have been in total agreement several months ago, but there were vary good reasons for my conversion to the Intel driver. I don't even mind the bloatware, which would be easy to avoid if I wanted. On a slower system, an older system -- I might opt for the Native drivers. Intel may have tidied up their act with more recent driver versions.
As for AHCI versus RAID. Unless something has changed, you need RAID-mode for ISRT pairing of SSD and HDD. Tell me if that's changed at all. Then, I discovered that to at least give RAPID a tryout for a Sammy 840 Pro, I needed AHCI. I'd rather have the option to use both AHCI and RAID disks, and that would mean a second controller. For the AHCI, you could rely on a PCIE x1 card, and use the onboard controller for RAID. If you want to use the onboard for AHCI, then you'd need a RAID-capable PCIE card and it would likely require at least x2, x4 or even x8 PCI-E.
Now -- I don't want to use RAPID anymore. If I want to cache to RAM, I'll use PrimoCache, and there are other software alternatives as well. But I want to be able to move drives around from system to system. I think, just for data, you could move a single drive configured under RAID-mode and not part of an array to an AHCI configuration and there shouldn't be a problem reading and writing to it.