I have one that I use with my WO FLT110 and with the WO guiding rings it works very well. I once tracked through the meridian and there was no obvious signs of any shift when it moved through.
The scope has a focus lock so there should be no issue with focus shift when using a heavier camera.
With my Orion Starshoot I have never had any problems finding a guide star. With an 80mm extension tube the SS focuses at between 5 and 5.5cm. The tube is fully extended at 8cm so this will give you an idea of how much extension is required. I have also used it with my diagonal and had no problem reaching focus.
I have only used the 'scope for guiding but at some stage I hope to use it for widefield imaging.
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