.................., the original steel box sectioned ones that preceded mine was stupidly heavy.
I've got an '87 square section Peter Ross trike (in bits for Winter rebuild) and Kev at D'Tek tells me it is no heavier than a new Trice. What you lose in tubing weights you gains in shock absorbers and other frills, I guess. I lifted a Trice at Mildenhall and it certainly didn't feel any lighter.
As to climbing hills, I am a 'bent beginner on my Bacchetta Giro and it took me about 200 miles to find my bent legs. I haven't actually had many hills I couldn't get up and those I didn't early on I have since been able to climb, albeit slowly. On the other hand I go much, much faster downhill and appreciable faster on the flat. My average speed is much the same as usual. All my fall offs have been on loose surfaces and slow speed running out of stability.
The bike is very comfy; no saddle soreness, no carpal tunnel pins and needles, no aches in shoulders or neck. I had some toe tingling problems but they were cured by moving the cleats on my shoes as far back as possible.
I returned to cycling after a 20 year gap last year and bought a bespoke Hewitt Cheviot SE. Lovely bike, fits me perfectly, but nowhere near the comfort or fun of the Bacchetta which, second hand, was a third of the price.
I'm also fairly certain that I get more room on the road and I definitely get positive comments from the non cycling population.
Your cycling life doesn't start until you have a 'bent and then you'll have two, or three
HTH
Edit: Just noticed that I posted on this back in August when I'd only had the Giro a few weeks and I haven't written anything different. sorry, but I'm glad I still feel very positive about the 'bent. It is certainly my favourite bike for touring and load carrying.