Load a conditional .phtml file in a block of layout xml file (ex. based on product SKU)
<p>Extreme newbie to Magento and php.
<br><br>I want to set a different phtml based on the product in a block of my <code>catalog.xml</code> layout.
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Basically, for normal products i want to load the usual <code>text.phtml</code> file in a block of my <code>category.xml</code> layout
(<code>catalog/product/view/options/type/text.phtml</code>, the one that shows custom text options) 
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But a particular product, I want the same block to load, say,<code>different_text.phtml</code> (<code>catalog/product/view/options/type/different_text.phtml</code>) 
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Is there a way to load a different phtml fle in a block on the basis of the SKU of the product?</p>