@Sluggo
I'm pleased to see so many Aussie's on bonesmart. My second daughter has just moved to Brisbane - but I'll just go to Australia on holiday and to visit her - we (me & hubby) are too old to emigrate there).
I'm an enthusiastic cyclist. I like to cycle in the landscape (trekking bike), and in the last few years I've also practiced cycling for triathlons. I finished a 70.3 Ironman near Heidelberg last July. I received my implant (left hip replacement) in April 2015. In Germany, many of us go to a rehab centre after hip replacement and don't go to work until after at least 6 weeks - occasionally 12 weeks and after that - phased-in return to work - but that's with a cut in the salary after 7 weeks (if your time off work due to sickness is more than 7 weeks). This has disadvantages as well of course - many colleagues and managers don't appreciate it when you stay away from work so long and become grumpy - some would bully you or say bad things behind your back. Anyway, I was back at work after 6 weeks.
I rode a stationary bike in my rehab centre under supervision as part of the physiotherapy. At 4 weeks post op, I was able to ride my normal bike - an extremely light trekking bike with a carbon frame. As the years go by, you will actually notice that your cycling will be better than before the op because your muscle strength will improve. Before the op, it didn't stand a chance to improve because you were unable to use your muscles in an optimum way.
As far as wearing out the device is concerned: I think the new devices are very durable, so don't worry about wearing it out. I have a titanium stem, ceramic ball, and ceramic lining in the cup. I didn't quite understand whether your Medacta device had a ceramic lining in the cup as well - and what material the ball was made from.
I also learned that cycling would not wear out the device no matter what material the device was made from - only long-distance running would. But I do it anyway because I'm already among the older sports people and want to enjoy myself while I can. Both my legs feel strong and I don't feel the device at all. I've had only left hip replacement - the right one doesn't need replacing.
Re the cold: I can assure you that we have temperatures well below freezing in Germany and I hate getting cold. But I never felt my left hip replacement during cold weather.
Enjoy your cycling - Constanze