1. Breadcrumb nav: several considerations.
(a) TBT can be annoying. You get the warning (not always, depending on settings) which partially obscures the screen -- I no longer use it;
(b) some people have a strong preference for a map layer. I personally care more about battery life;
(c) it works very well for me. You glance at your watch (on your wrist when on foot, on your stem when biking) and it is easy to tell if you are on/off your route. Saved my skin a couple of times when trails are not discernable (e.g. rocks, overgrown vegetation etc.).
2. Pushing routes to your watch: there are many ways. My preferred solution it to generate the route from Locus Pro/Android and export to the watch via Gimporter. Makes it easy to design a route when underway and push it to your watch.
Happy birthday
