The study of capsules assembled through XB and ChB interactions is still in its infancy, with the first example of a solution-persistent capsule only reported within the last decade. Similarly, preliminary results have shown these systems to be capable of binding guest molecules, although exploitation of this for applications remains very much underexplored. There has been one report, however, of a ChB capsule demonstrating selective encapsulation of oxime isomers and their isomerisation under confinement. To date, systems assembled from donor-and acceptorfunctionalised build blocks have been reported solely from suitably functionalised cavitands. Despite this limited structural diversity, there is nothing inherent to the design of these capsules that suggests alternative building blocks could not be used. In contrast, those assembled using halonium ions have been demonstrated with a range of ligands of different geometries and denticities. The potential to exhibit stability in various solvents and across a range of concentrations has also been demonstrated, although less robust systems remain predominant. As such, XB and ChB capsules 173 at this nascent stage of their study show promise as robust supramolecular architectures.