That said I've got two VOR/ILS a DME and a ADF and I'll have 'em all tuned idented and selected if they're available as well as a chart on my lap. I see no harm in having belt, braces and a piece of string to hold up one's trousers in IMC.
On that I think we would all agree. You will not catch me flying around such tight airspace without a GPS and I will always take a traffic service if I can get one. Doesnt mean I wouldnt fly without a traffic service (although these days I have TAS and I am a lot more comfortable with it), and it doesnt mean I wouldnt fly without a GPS if I had to.
Last year I did about a quarter way across Europe without almost anything after the GPS failed on the aircraft I was reluctantly flying and the VOR was a awaste of space most of the time. I did ask air traffic to keep a watchful eye on my progress however!