Please don't confuse this mount with one that can be used without a guider. Even the strain wave mounts (SWMs) with encoders can't do that.
The Nyx is a German equatorial mount. The GEM configuration has nothing to do with how the mount is driven.
People need to understand the technology they are using so they can set reasonable expectations for its use. There is a lot of confusion about SWMs. SWMs do not generally perform any better than the average worm-driven GEM of similar quality out there, and in some respects, they perform worse. The benefits of SWMs generally come in the area of mount weight, small backlash, and often better build quality than the average mount (typically built in China these days). That's why you get and SWM. Not because most, if any, of them will outperform an average GEM out there. Downsides are cost and mount weight (it's a positive and negative). A light weight mount is not necessarily better than a heavier mount that requires counterweights. In some cases (particularly when used with large/heavy scopes), people often confuse the ability of an SWM to lift a large weight with little or no counterweight to the ability to do so and perform well at the same time. The increased cost of SWMs comes from the generally better-quality (in the mounts we've seen), and relatively expensive drive systems. Strain wave drives were very expensive until the Chinese started flooding the market with small, cheap strain wave drives fairly recently.
If you get a strain wave mount expecting it to be easier to use than a standard worm-driven mount, you will be disappointed. If you expect to image without a guider, you will be very disappointed.
Like most things in this hobby, there are no miracle products that solve all the issues. Of the three main mount drive systems available, worm, strain wave, and direct (torque motor) drives (there is one company that makes fully belt-driven mounts), the SWMs are probably the lowest performing if you consider them on the basis of three mounts of equal quality being compared. Direct drives are probably the most difficult to use in most cases. While high quality worm drives are still the most accurate, precise, and simplest drive systems there are. So far, the addition of encoders to SWMs has not resolved the problems related to the strain wave drive system, but they have made guiding easier in some cases).
With all this considered, a mount should still perform reasonably close to the level at which it is advertised as performing. While there is a lot of user error in this hobby, that doesn’t mean that there are no problem examples or problem products.