I mostly drink Chardonnay: does this Graippeaux offer a chance to discover another grape variety?

Yes, this white Saumur is made from Chenin, so it lets you try a different grape variety while still choosing a white wine. It offers a chance to discover something new, without assuming it will taste similar to the Chardonnays you usually enjoy.

Is this a way to discover Saumur beyond its red wines?

Yes, this Graippeaux offers a way to explore the appellation through a white wine made from Chenin in the Saumur region. It therefore provides a different starting point for exploring the wines of the Loire Valley, without taking red wines as the only reference.

What makes this bottle interesting for a blind-tasting exercise?

Its known identity—Chenin, Saumur, 2024 vintage—provides reference points to compare with your impressions once the bottle is revealed. The point is to distinguish what you actually perceive from what the label might have led you to expect.

For an evening devoted to Loire wines, what role could this Graippeaux play?

You could choose it to represent a white Saumur made from Chenin. Present it as a specific example—the 2024 wine from the Bodet estate—rather than as a summary of all Loire Valley white wines.

If I enjoy this Graippeaux, can I conclude that I'll like all white Saumur wines?

It's better to consider it a starting point rather than a guarantee. Your preference here will be for a specific cuvée, estate, and vintage—all useful reference points to keep in mind as you make your next discoveries.