No problems in Guinea-Bissau at present, I've been working in country for 16 months now, travelling around on my BMW 650 Dakar with the Blue BMW style jacket... done over 7000 miles up and down senegal, mali, guinea connakary and guinea-bissau.
Even when the problem that occured happened, their was no real stress. Visas for Guinea are possible overnight for 40,000 CFA for multi entry, but better to get them in Banjul apparently as they are a lot cheaper. The main concern is petrol which can be a bit difficult to find at times from the petrol stations but normally available with a little bit of asking around.
Just a situation update, sorry i was a bit slow on adding to the information.