For sceptics of Scottish Nationalism generally and the SNP in particular it's always been interesting to observe how the party tries to reconcile the various political views encompassed by its Blairesque 'big tent' approach to politics.
Of course, to a large extent its lack of activity as a governing party and, as a corollary, its preoccupation with its 'big idea', have conspired to keep such paradoxes largely under the political settee*.
Thus the SNP's association with wealthy donors and cronies from the right of the political spectrum - most obviously Donald Trump, Brian Souter and Rupert Murdoch - hasn't really been too detrimental to the party's political fortunes. Yet.
But in the last couple of weeks in particular, Trump's 'mad Alex' response to Mr Salmond's preoccupation with renewables and the first minister's dealings with Murdoch have not made for good Nationalist headlines. And indeed even the more long-standing problem of Brian Souter allowed Wullie Rennie to ably demonstrate Mr Salmond's ability to totally avoid the question - twice - at yesterday's FMQs.
And now there's the potential for another threat, this time from the hard left. In an article on News[sic]net Scotland Tommy Sheridan beats the drum for independence, and excoriates Alex Salmond for his "apparent love-in with one of the nastiest and reactionary business moguls on the planet."
And he implores the first minister to "drop Murdoch now and help lead us to a successful independence referendum untarnished by association with the toxic and poisonous News International brand."
Which in view of Tommy Sheridan's brand of politics - that have never really found much favour with Scottish voters - and even not mentioning his extra-political activities and troubles, all this seems just a tad ironic.
Of course, it's not difficult to discern Mr Sheridan's motivation here, but to the extent he tries to tries to disguise his conflation of his own personal antipathy towards Murdoch and NI with the issue of Scottish independence, it's questionable whether his intervention will help or hinder the SNP.
Equally, however, perhaps the bigger issue still is whether anyone will actually notice his input, excepting of course us political anoraks who pay a bit more attention to these things than the people who'll largely decide the referendum result.
* No allusion to the so-called 'sofa politics' of Blairism intended!