I’m still running my Triban 520 on Tannus tyres. I’ve done about 5000 miles on them. They are worthwhile, when you’re used to them. They do have some ‘quirks’ which require getting used to. If you really can’t afford to get punctures, or you have difficulty with sorting punctures out, they are the best solution. You’ll often read reports / horror stories about them, but it’s usually regurgitatated clap trap, from people with little or no experience of actually riding a lot, with them. Once you’re used to the ( slightly odd at first ) feel of them, especially in corners, or particularly on the ‘tactile mats’ used on pedestrian crossings / entry to cycle lanes etc. They are well worth a go. Tannus have recently updated the road tyre version of them, they now include a 25mm tyre, with a lower ‘virtual Pressure’. Previously you could only get a 23mm or 28mm version, with 110 or 100 psi virtual pressure ( which is a lot for a 28mm tyre). I’ve found them invaluable for riding in dark, cold, wet conditions. Also, they have been tested by the T.U.V. https://www.tuv-sud.co.uk/uk-en So they have got some credentials from the aspects of safety and performance.