I have the i7 version with RTX 2070 Super Max-Q (SFS10-011) and can confirm that fans quickly get loud and the CPU does heat-up quite fast with performance settings set to "Medium" (even with a cooling pad). If it's just a matter of noise, well maybe not a bad compromise given performance, but I hope it isn't a source of long-term problems.
Visually, the MSI GS66 Stealth offers a very subdued and tasteful impression. But as soon as you turn on the device, the fans quickly make themselves heard.