The answer is no - and, in fact, you can no longer do it with a SATA SSD either. With the advent and availability of Optane memory (the 16GB and 32GB modules are specifically used for HDD caching), support for Optane has completely replaced the support for Intel SRT - which is too bad, because I find Optane to be buggy and unstable (whereas SRT was rock solid)...😣
Sorry (wait, why am I apologizing?),
In Skylake, you can use RAID0/1 across two NVMe drives but, to use SRT, you can only use SATA-based drives (i.e. SATA-based SSD and SATA-based HDD).