Arturo, I am glad you like my modest collection of roses and also that you have some of them in your garden.
As far as ordering roses from Europe is concerned, I am not amazed about the difficulties you would have trying to import! Many countries have a lot of red tape when it comes to importing plants and rightly so! Diseases and pests can be introduced and cause havoc in our gardens.
Hybridizing new roses is, as you say quite easy and if you land up with something special you even get to name it yourself and share it with your rose buddies or if it is really a great rose, even have it registered.
You asked about my climate here in Switzerland. We live in the north eastern part of Switzerland, 600mASL and fall into Zone 6a. We used to have a snow cover the whole winter but it is no longer the norm. Temperatures in a normal winter are on average between 0 and 6C and summers between 25 and 30C with June/July being the months with the most rain.
Wishing you success with your roses and look forward to hearing about your hybridizing experiences.