Having two passports issued by the same country may involve different issues to having two passports from two different countries and I talked to one traveller who decided to swap passports at one land border to avoid having to pay reciprocity fees and he said that didn't work even when he showed them the exit stamp from the previous border. He paid the fee. Fairly expensive mistake in S America where having a British passport gives you free entry to most countries while other passports may cost you over $500 in visa and reciprocity fees.
As always, what is OK depends entirely on the whims of that particular officer so your experience will vary.
I recall epicycles.com had similar issues with visas on the road and they had dual (nationality) passports and sent their australian one back home to get visas for a couple of countries. Don't recall them mentioning a problems but I don't think they left the country while their passport was in transit.
|